What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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BMW 3 Series F30 F80 Boot Trunk Lid Tailgate Wiring Loom Harness Cable 9260012

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2055408104

Battery Cable Mercedes W205 X253 Diesel OM651 Alternator Wiring A2055408104

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8573260-5

ECU Kit BMW F20 F21 116d Diesel N47N 116HP DDE 8573260 Key FEM Lock Manual

€308.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8V41-13D154-BF-2

Ford Kuga Mk1 Headlight Headlamp Wiring Cable Front Right O/S 8V41-13D154-BF

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9845632

BMW U06 X1 U11 F74 Ping Sensor Knock Sensor 220i B38N B38A15P Petrol 9845632

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A9075407312

Mercedes W907 Battery Fuse Box Positive Distribution Terminal A2479061803

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8506434-4

BMW E81 E84 E87 E90 LCI 18d 118d 318d N47 ECU Kit DDE 8506434 CAS3 Key Automatic

€251.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9350336

BMW F06 F12 F13 F80 Mini F56 Radio CD Player Head Unit 9395949

€75.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LR3T-14G087-VG

Ford Transit Mk8 Ranger MK3 Telematics Control Unit Module LR3T-14G087-VG

€94.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8638742

BMW G11 G12 G20 G30 Ground Line Battery Earth Cable Wire Cable 8638742

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8H1971029AK

Audi A4 Cabriolet B7 Door Harness Front Driver's Side 8H1971029AK

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9181411-2

BMW F07 GT F10 F11 Hands Free Telephone Microphone Unit Black 9181411

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. F2GT-15K619-BB

Ford Mondeo Mk5 Keyless Entry Receiver Module ECU F2GT-15K619-BB

€51.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6G9T-14B192-DA-1

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit Set Kit 6G9T14B192DA

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LK62-9D370-BB

Land Rover Range Rover Velar L560 Fuel Pump Control Unit Module LK62-9D370-BB

€42.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. E83-LCI-SCREEN

BMW X3 E83 LCI Head Unit GPS Navigation Display Screen Android Auto CarPlay 9"

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7525434-1

Mini R52 R53 W11 Battery Cable Wire Harness Starter Base B 7525434

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6992955

BMW F25 Footwell Light Control Module ECU Unit FRM3 TEMIC 6992955

€113.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9362398

BMW F20 F21 F30 F31 F32 F45 Body Control Unit Module REM 9362398

€37.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W0971237J

Audi S5 F5 Earth Line Wiring Cable 3.0 TDI Quattro 8W0971237J

€47.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9153418

BMW F10 F11 B Plus Distributor Front Battery Cable 9153418

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8P0971148

Audi A3 8P Tailgate Heated Rear Window Wiring Harness Loom 8P0971148

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2215408707

Mercedes W221 Rear Door Wiring Loom Harness Cable Connector Left N/S A2215408707

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5P0035225A

Seat Leon 1P Altea Antenna Amplifier Booster 5P0035225A

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9133144

BMW 5 Series E61 Body Gateway Module KGM LOW LEAR 9133144

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1645400801

Mercedes X164 SAM Control Unit Signal Actuation Acquisition Module A1645400801

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A6519007500-19

Mercedes W204 C250 CDI 651.911 136HP Engine Unit ECU Kit A6519007500 Manual

€218.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7P6919603J

Volkswagen Touareg 7P Multimedia Navigation Display Screen 7P6919603J

€218.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8E0035456D

Audi A4 B8 Telephone Aerial Antenna Signal Amplifier Module 8E0035456D

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4H0907064DN

Audi A6 C7 BCM Body Comfort Convenience Module Unit ECU 4H0907064DN

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9354389

Mini F55 F56 F57 Central Cover Information Instrument Radio 9354389

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9291977

Mini Roadster R59 Cabrio Convertible Top Module CVM 61359291977 9291977

€47.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8367094

BMW E65 Fuse Box Relay Unit Control Module Connector Box 8367094

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 079903805AF

Audi A5 S5 S5 8T 4.2 FSI Alternator Bracket Mount Holder 079903805AF

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8K0919475B

Audi A5 8T Park Parking Assist PDC Distance Control Unit Module 8K0919475B

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1765405109

Mercedes C117 X156 W176 M133 AMG Cruise Control Radar Adapter Wiring A1765405109

€37.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8T8971688L

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Right O/S 8T8971688L

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4H0907063BA

Audi A6 C7 Onboard Supply BCM Body Control Module Unit ECU 4H0907063BA

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W0907468C

Audi A4 B9 Body Gateway Module ECU Control Unit 8W0907468C

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9200943

BMW 1 3 Series E81 E87 E90 E91 E92 Ultra Sonic Alarm System Module 9200943

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. HU5T-15604-BCR

Ford Fiesta MK8 Body Control Module BCM Fuse Box HU5T-15604-BCR

€66.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6809487

Mini F56 Front Door Wiring Harness Cable Passenger Side 6809478

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9291451

BMW F13 Central Gateway Module ECU Control Unit Lear ZGW-02 High 9291451

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7P0972837

Porsche Cayenne S 92A High Voltage Wiring Harness Protective Plate 7P0972837

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. N8A2-14N164-AA

Range Rover Velar L560 Hybrid Battery Wiring Harness 2.0 Diesel N8A2-14N164-AA

€51.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. R8E2-14D374-AB

Land Rover Range Rover Evoque L551 Air Control Unit Module R8E2-14D374-AB

€142.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9895416-1

BMW F20 F21 LCI 118i B38 136HP Engine ECU Kit DME 9895416 FEM Key Automatic

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8510221-16

BMW E90 E91 E92 LCI 325d Diesel N57 204HP ECU Engine Module DDE 8510221 Manual

€70.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8506373-1

BMW X3 E83 LCI 1.8d N47 Engine Control Unit ECU Kit Module DDE 8506373 EWS Key

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1695453740

Mercedes-Benz A-Class W169 Fuse Box Unit Holder Bracket Frame A1695453740

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5QS919294

Volkswagen Crafter Mk2 Tiguan Mk3 PDC Parking Sensor Control Module 5QS919294

€70.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9267244

BMW F10 F12 F20 F30 F31 F36 Telematics Communication Box Cover Lid 9267244

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7P6971693Q

Volkswagen Touareg 7P Door Harness Wiring Loom Rear Left Right N/O/S 7P6971693Q

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1729062000-2

Mercedes SLK R172 Rear Tail Light Lamp Wiring Harness Cable Left N/S A1729062000

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4L2035670C

Audi Q7 4L Head Unit Radio Player Navigation Control Module 4L2035670C

€474.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6G9T-14B192-BA

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-BA

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9264568-1

BMW E82 LCI Body Control Module Unit PL2RR JBBFE IIIR L1 9264568

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. F1FA-9D370-GA-1

Ford Mondeo Mk5 Fuel Pump Control Module F1FA-9D370-GA

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5B79162

Mini F66 Front Door Control Unit Module ECU Passenger Side 5B79162

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. BK2T-19L540-AE

Ford Transit Custom Mk8 Door Wiring Loom Harness Left N/S BK2T-19L540-AE

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4E0941285G

Audi S8 D3 Front Headlight Level Control Sensor Left N/S 4E0941285G

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. GR3T-18T806-BG

Ford Mustang GT Mk6 Audio Speaker Amplifier GR3T-18T806-BG FR3T-18B849-A

€85.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9234421-1

BMW F01 F02 F04 F06 F07 F10 Front Power Distribution Fuse Box 9234421

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W6035412A

Audi S5 F5 Trunk Bass Loudspeaker Speaker Rear Center 8W6035412A

€42.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9166783-1

BMW X5 X6 E70 E71 Rear Seat Console Entertainment DVD Display Screen 9166783

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 0265005654

Land Rover Discovery 3 L319 ABS YAW Rate Speed ESP Sensor Module 0265005654

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 03L906018JJ

Audi A4 B8 A5 8T 2.0 TDI 177HP Engine Control Module ECU 03L906018JJ Automatic

€51.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8617551-5

BMW F20 F21 125i N20 218HP ECU Control Unit Kit DDE 8617551 Key FEM Automatic

€474.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4G0035736-1

Audi A6 Allroad Avant A7 4G8 RS6 USB Charging Socket Aux Connection 4G0035736

€94.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2059068501

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. EJ32-10E889-AJ

Range Rover Evoque L538 Sat Nav Multimedia Radio Display Screen EJ32-10E889-AJ

€222.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 06F906056GA

Volkswagen EOS 1F 2.0 FSI BVY 150HP Engine Control Module ECU 06F906056GA Manual

€113.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. YDN000010

Range Rover L322 Engine ECU Control Unit Housing Cooling Fan Pipe YDN000010

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7253188-2

BMW E92 Seat Covering Panel Sports Left Right Thigh Support Cover Black Leather

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7550975

BMW 1 3 Series E81 E82 E87N E88 E90 E91 E92 N43 Starter Motor

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2055402645

Mercedes W205 Rear Bumper Parking Sensor Wiring Loom Harness A2055402645

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2055457540

Mercedes W205 C238 X253 W213 Inner Firewall Contact Support A2055457540

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9286171

BMW F20 Front Right O/S Wiring Loom Harness Door O/S 9251711

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. M8A2-10C820-AC

Land Rover Discovery Sport L550 Battery Ventilation Pipe Hose M8A2-10C820-AC

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A9079051602

Mercedes W907 Aerial Antenna Amplifier Control Unit Module A9079051602

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4H0971023

Audi A8 D4 A8 S8 4H Front Bonnet Wiring Loom Cables Harness 4H0971023

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8489647-4

Mini Cooper F55 B38 1.5 136HP Engine ECU Kit DME 8489647 BDC Key Manual

€393.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 1T0971095AN

Volkswagen Touran 1T Front Bumper Parking Sensor PDC Wiring Loom 1T0971095AN

€37.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1729062100-2

Mercedes R172 Rear Tail Light Lamp Wiring Harness Cable Right O/S A1729062100

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. JX61-12B533-AB

Ford Transit Mk8 Engine Glow Plug Relay Module 2.0 EcoBlue Diesel JX61-12B533-AB

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8865048

Bmw X1 U11 Low Voltage Wiring Harness Cable Loom 8865048

€80.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2465410905

Mercedes W176 W246 C117 X156 Battery Fuse Relay Box Top Cover Trim A2465410905

€37.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8V0035504B

VW Volkswagen Golf GTI Mk7 Chip Card Reader Road Toll Sender Control 8V0035504B

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4G5945093G-2

Audi A6 C7 Rear Tail Light Lamp LED Wiring Cable Inner Left N/S 4G5945093G

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2075844181

Mercedes C207 Fuse Box Grouping Fuse Placement Map Card Diagram A2075844181

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 03C906027AE

Seat Ibiza 6J Mk4 1.4 TSI CAVE 180HP Engine Control ECU 03C906027AE Automatic

€222.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9675359580

Peugeot 3008 Bluetooth Module Multimedia Control Unit ECU 9675359580

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5A0E550

BMW G11 G16 Z4 G29 Wireless Charger Charging Device Module Unit 5A0E550

€70.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 059907309L-5

Audi A6 C8 3.0 TDI Quattro DDVB 286HP Engine ECU Kit BCM + 2 Key 059907309L

€360.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2118202442

Mercedes E-Class W211 S211 Rear Right Door Window Lifter Motor Regulator

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. BV6N-14A073-DR

Ford Focus Mk3 Body Control Module Fuse Box Control Unit BV6N-14A073-DR

€42.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. FV61-12A650-ZB

Ford Transit Connect Mk2 Engine Control 120 HP 1.5 TDCi Manual FV61-12A650-ZB

€180.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9X2Q9A361CA

Range Rover L320 Sport Rear Fuel Pump Control Unit Bracket Holder 9X2Q9A361CA

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8K5035570

Audi A4 B8 Aerial Antenna Disturbance Suppressor 8K5035570

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

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